first version of obidemerge, obijoin and a new filter for obicleandb but to be finnished

Former-commit-id: 8a1ed26e5548c30db75644c294d478ec4d753f19

pkg/obioptions/version.go

@@ -7,7 +7,7 @@ import (
 // TODO: The version number is extracted from git. This induces that the version
 // corresponds to the last commit, and not the one when the file will be
 // commited
-var _Commit = "2bc540d"
+var _Commit = "a365bb6"
 var _Version = "Release 4.2.0"
 
 // Version returns the version of the obitools package.